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<br />001541 <br /> <br />fish. Both of these two events are dependent upon operating cri- <br />teria and not reduced streamflow itself; therefore, without addi- <br /> <br />tional information and additional studies, it would be difficult and <br /> <br />imprecise to predict impacts. However, given the information <br /> <br />t <br />l <br />N <br />P <br />~ <br /> <br />available, some idea of the kinds of environmental impacts which <br /> <br />could be expected follows. <br /> <br />After comparing predicted, present, and past flow data, as well as <br />salinity data, from the compact point south, it was determined that <br />all salinity impacts would be insignificant and that flow reduction <br />would be of significance only in the stretch of river from Glen <br />Canyon Dam to Lake Mead. Therefore, this discussion deals only with <br />that stretch of the river. <br /> <br />Fishery Habitat, - Two of the average annual stream conditions <br /> <br /> <br />show flows substantially less than presently experienced. These <br /> <br />two conditions are used for this discussion because they will no <br /> <br />doubt produce the greatest impacts. <br /> <br />The remaining average annual <br />, <br /> <br />flow conditions are fairly close to what are considered normal <br /> <br />conditions today. It should also be pointed out that these <br />substantially reduced flows would be due mainly to drought <br />conditions in the Colorado River Basin and not to energy develop- <br />ment in the Upper Region. Only a small increment of the reduced <br />flows would be due to energy development in the Upper Region. By <br />far the greatest portion of the impact, therefore, would be due <br /> <br />to drought and not to energy development. It should also be <br /> <br />24 <br />